EP3688367A1

EP3688367A1 - Motor vehicle illumination device comprising micro-optical systems provided with subdivided incidence micro-optical elements

Info

Publication number: EP3688367A1
Application number: EP18752675.1A
Authority: EP
Inventors: Andreas Moser
Original assignee: ZKW Group GmbH
Current assignee: ZKW Group GmbH
Priority date: 2017-09-27
Filing date: 2018-07-30
Publication date: 2020-08-05
Anticipated expiration: 2038-07-30
Also published as: AT519863A4; JP6949207B2; AT519863B1; KR20200043435A; KR102371977B1; CN111094839A; US11060684B2; JP2020535598A; WO2019060935A1; CN111094839B; EP3688367B1; US20200217471A1

Abstract

The invention relates to a motor vehicle illumination device (1) for generating light distribution, comprising an optical imaging system (2) and at least one light source (3) associated with the optical imaging system, in which: the optical imaging system (2) comprises a collimator (4), an incidence optical element (5) and an emergence optical element (6); the collimator (4) is arranged between the at least one light source (3) and the incidence optical element (5) and is designed to collimate light beams produced by the at least one light source (3) in order to produce collimated light beams, and to guide the collimated light beams (7) towards the incidence optical element (5) of the optical imaging system (2); the incidence optical element (5) comprises a plurality of integrally formed incidence micro-optical elements (50 to 58), a first optical axis (50a to 58a) being associated with each incidence micro-optical element (50 to 58) and all first optical axes (50a to 58a) extending in the same direction corresponding to the direction of propagation of the collimated light beams (7); the emergence optical element (6) comprises a plurality of integrally formed emergence micro-optical elements (60), a second optical axis (60a) being associated with each emergence micro-optical element (60) and all second optical axes (60a) extending in the same direction; each incidence micro-optical element (50-58) comprises a light incidence surface (50b to 58b) facing the collimated light beams and a light emergence surface (50c to 58c) facing the emergence optical element (6), all of the light emergence surfaces (50c to 58c) forming a common, preferably flat surface (8); and at least two differently formed incidence micro-optical elements (50 to 58) are associated with each emergence micro-optical element (60) in such a way that light beams (9a to 9c) hitting the at least two differently formed incidence micro-optical elements (50 to 58) and passing through said at least two differently formed incidence micro-optical elements (50 to 58) exclusively hit the emergence micro-optical element (60) associated with the at least two differently formed incidence micro-optical elements (50 to 58) and form different sub-regions of the light distribution after having passed though the emergence micro-optical system (60).

Description

MOTOR VEHICLE ILLUMINATION DEVICE WITH MLKROOPTIC SYSTEMS SUBJECTED TO SUB-DIVIDED MICRO-ENTRY OPTICS

The invention relates to a motor vehicle lighting device for generating a light distribution comprising an optical imaging system and at least one light source associated with the optical imaging system

Imaging system comprises a collimator, an entrance optics and exit optics, wherein the collimator between the at least one light source and the entrance optics is arranged and arranged to generate from the at least one light source

Collimating light beams to produce thus co-ordinated light beams and directing the collimated light beams onto the entrance optics of the optical imaging system, the entrance optics having a plurality of integrally formed micro-entry optics, each micro-entry optic associated with a first optical axis is, wherein all first optical axes in the same direction, preferably parallel to each other, extend, which direction corresponds to the propagation direction of the collimated light beams, the exit optics having a plurality of integrally formed with each other micro-exit optics, each micro-exit optics associated with a second optical axis is, wherein all the second optical axes in the same direction, preferably parallel to each other, each micro-entry optics one of the collimated light rays facing light entrance surface and a preferably plane, the Austrit Tsoptik facing light exit surface, all light exit surfaces form a common, preferably flat surface.

The above type of automotive lighting devices is known in the art. AT 514967 B1 of the applicant describes a projection light module for a motor vehicle headlight, which may comprise an entrance, an exit optics and a diaphragm device. It is both the entrance optics and the

Exit optics designed as micro-optics arrays. In this case, a micro-entry optics, a micro-exit optics and possibly a diaphragm arranged between these two optics form an optical imaging system with which a part of the common light distribution is generated. Here is one as this part of the light distribution in front of the

Motor vehicle lighting device pictured partial intermediate image of the

corresponding single micro-entry optics generated. This is disadvantageous as only the degrees of freedom of each micro-entry optics can be used to make the light distribution.

The object of the present invention is that

Motor vehicle lighting device of the above-mentioned type such that the number of ways to modify the radiated light distribution and / or adjust and / or fine-tune, is increased.

This object is achieved by a motor vehicle lighting device of the above type according to the invention that each micro-exit optics are assigned at least two differently formed micro-entry optics such that on the at least two differently formed micro-entry optics incident and at least two differently formed micro-optics. Entry optics passing through light beams incident solely on the at least two differently shaped micro-entry optics associated micro-exit optics and after the

Passing through the micro-exit optics different parts of the areas

Form light distribution.

For example, one may use the design and / or shape of the individual micro-entry optics to make certain desired changes to the

to effect radiated light distribution.

In addition, it may be expedient for the at least two micro-entry optics to be in the form of an NxM micro-entrance optical array, where N> 2 or M> 2, preferably as a 3 × 3 micro-entrance optical array or in a N × M micro - Entry optics array, where N> 2 or M> 2, preferably in a 3x3 micro-entrance optics array are arranged.

In addition, it may be advantageous if the entry optics is set up to produce an intermediate image (with the help of the at least two differently formed micro entrance optics), which intermediate image is imaged by the exit optics in front of the motor vehicle illumination device, wherein the intermediate image

preferably located in front of the exit optics.

It may be advantageous if all micro-entry optics are designed as lenses. Compared to conventional lenses, these lenses have a smaller diameter and consequently a lower center thickness. This can be advantageous in terms of the manufacture of the lenses. Furthermore, this results in a reduction in the thickness of the entire entrance optics. This allows a smaller length extension of the entrance optics and, as a consequence, of the entire optical imaging system and therefore brings installation space advantages. In addition, lenses with a low center thickness have a smaller wall thickness variation. It follows that manufacturing tolerances can be kept low.

In addition, it may be advantageous if at least one first micro-entry optics of the at least two differently formed micro-emergence optics associated and / or corresponding micro-entry optics is formed and the micro exit optics corresponding and / or associated such that collimated propagate light rays incident on this at least one first micro-entrance optics after emerging from the micro-exit optics in the direction of an HV region of the light distribution. The at least one first micro-entry optics may be formed, for example, as a plano-convex lens.

If the micro-entry optics are designed as lenses, for example as free-form lenses, and each micro-exit optics corresponds and / or is associated, for example, with a 3 × 3 micro-entrance optical array, then, for example, a central lens of the array can focus more strongly than its neighbors to focus on this way to achieve a higher maximum illuminance in the HV point. The term "HV range" is to be understood as a range around the HV point, which is extended approximately from -5 ° to + 5 ° horizontally and from -5 ° to + 5 ° vertically, preferably the vertical extent of the HV range of -2 ° to + 2 °, when the motor vehicle lighting device for realizing a driving light function (for example, generating a low beam or

High beam distribution) is used and from -5 ° to + 5 °, if

Automotive lighting device for realizing signal light distribution (for example, generating a turning light distribution) is used.

In addition, it may be expedient if at least one second micro-entry optics of the at least two differently formed micro-emergence optics associated and / or corresponding micro-entry optics is formed and the micro exit optics corresponding and / or associated such that collimated on this at least one second micro-entry optics incident light rays after exiting the micro-exit optics in the direction outside an HV range of the light distribution propagate. The at least one second micro-entry optics can be designed, for example, as a plano-concave lens or as a plano-concave lens piece or as a plano-convex lens piece. It is also true that if the micro-entry optics are designed as lenses, for example as free-form lenses, and each micro-exit optics corresponds, for example, to a 3 × 3 micro-entrance optical array and / or is assigned, then for example those adjacent to the central lens of the array , Lens surrounding lenses surrounding this central lens are less focused than the central lens so as to determine the width of the light distribution or to form edges of the light distribution.

Moreover, it may be expedient if the light entry surfaces of the micro entrance optics are formed as free-form surfaces. In this case, a free-form surface is understood to mean a surface which is typical for a free-form lens. For example, the

Be light entrance surface of the at least one first micro-entrance optics of the at least two micro-entry optics in the horizontal and vertical directions differently curved. The light entry surface of the at least one second micro-entry optics of the at least two micro-entry optics can also be designed as a free-form surface. In addition, it may be expedient for the courses of the free-form surfaces of the light entry surfaces of said at least one first and at least one second micro-entry optics to be different (see in particular FIGS. 5 to 8).

The light entry surfaces of the micro entrance optics and the light exit surfaces of the micro exit optics can be curved differently. It can at a

Micro-optics system, for example, a micro-exit optics comprising at least two of the micro-exit optics associated micro-entry optics and optionally a diaphragm, each micro-entry optics have their own curvature of the light entrance surface, which curvature is also the curvature of the light exit surface of the micro - Can distinguish exit optics. This allows the parameters, such as focal length, collimation intensity of a transmitted light beam, etc., of each individual micro-optics system to be varied independently of the parameters of the other micro-optics systems. These parameters are often referred to in technical literature as "degrees of freedom of the optical system."

In the context of the present invention, the term

"Vertical" / "horizontal" an axis of one with the motor vehicle lighting device connected coordinate system, which is vertically / horizontally aligned, when the motor vehicle lighting device is in a position which situation a

Installation state of the motor vehicle lighting device corresponds to a motor vehicle.

The invention will be described below by way of non-limiting example

Embodiments explained in more detail, which are illustrated in a drawing. In this shows:

Fig. 1 is a light module in exploded view;

2 shows a light module with an aperture device in exploded view; 3 shows an enlarged detail of the light module from FIG. 2; FIG. 4 is a rear view of the enlarged portion of FIG. 3; FIG. FIG. 5 shows a B-B section of FIG. 3; FIG. FIG. 6 shows an A-A section of FIG. 3; FIG.

Fig. 7 is a horizontal section of an enlarged section of another

Embodiment of a light module according to the invention with free-form micro-entry optics, and

Fig. 8 is a vertical section of an enlarged section of another

Embodiment of a light module according to the invention.

First, reference is made to FIG. This shows a light module 1, which may correspond to a motor vehicle lighting device according to the invention. Such a light module can be used for example in a headlight of a motor vehicle and for generating a, for example, legally compliant

Be set up light distribution. The legal requirements and standards can be different for different countries and / or regions of the world. The

Fiction, contemporary light module can meet the requirements in several countries / regions (eg EU, North America, Japan and China) at the same time. The light module comprises a optical imaging system 2 and at least one associated with the optical imaging system light source 3. The optical imaging system comprises a collimator 4, which is adapted to collimate the light rays generated by the at least one light source 3, an entrance optics 5 and 6 exit optics. The collimator is usually arranged between the at least one light source 3 and the entrance optics 5. The collimator 4 can be designed, for example, as a TIR lens (TIR for total internal reflection). Further, a collimator may be formed as an optical body formed of a material whose refractive index is greater than the refractive index of the air (at ordinary operating temperatures of a motor vehicle headlamp), such as glass or plastic, which optical body transmits the light under the name of " Total internal reflection "known physical effect of its light incoupling surface to its light output surface conducts almost without loss

Substantially entire refracted at the light output surface of the optical body light through the air on, preferably a predetermined direction (in Figure 1 - Z direction), from. It is also conceivable that the collimator 4 is formed as a reflector, i. as a (above all visible) light-reflecting surface that propagates through air

Light beams in preferably a predetermined direction (in Figure 1 - direction Z) deflects.

The light module may also include other parts, such as heatsinks, support frames, mechanical and / or electrical actuators, covers and so on and immediately. For the sake of simplicity, however, here are the parts of the light module

shown schematically, which may prove useful in the presentation of the inventive idea. It is dispensed with a detailed description of the above-mentioned standard components of a light module.

The light generated by the light source 3, which passes into the collimator 4, is formed by this into a light beam preferably of collimated light beams 7, wherein the collimated light beams are aligned substantially parallel to each other (see, for example, Figures 5 to 8). Essentially parallel means that the

Collimated beams only run parallel if the light source is designed as an ideal point light source. However, this mathematical abstraction is very rare in modern motor vehicle construction. At extended (not punctiform)

Light sources (for example, an LED light source) results depending on magnification a deviation from the above-mentioned parallelism of the light beams in the light beam. A deviation of up to +/- 15 ° is possible. Under certain circumstances an even greater deviation is possible. The collimated light beams 7 are incident on the entrance optics 5 of the imaging optical system 2. The light module 1 shown is particularly suitable for generating a high beam distribution.

FIG. 2 shows the light module 1 from FIG. 1, in which the optical imaging system 2 comprises an aperture device 10, which is arranged between the entrance optics 5 and the exit optics 6. As is known in the art (see, for example, Applicant's AT 514 967 Bl), such aperture devices 10 may prove useful, for example, in producing dimming beam distributions. In this case, the light-dark boundary of a low-beam light distribution can be generated by the formation of diaphragm edges of the diaphragms of the diaphragm device 10 arranged in an intermediate image plane. The optical imaging system 2 may also have other (not shown here)

Lighting devices include, for example, as in AT 517885 AI of

Applicant is described in detail, are provided to remedy aberrations. For a detailed description of the optical imaging systems with such lighting devices and in particular for a detailed description of the

Lighting device whose optically effective edges to form a

Abblendlichtverteilung and / or to remedy aberrations is explicitly referred to the writings AT 514 967 Bl and AT 517885 AI.

FIG. 3 shows an enlarged detail of the light module of FIG. 2. In this case, the entry optics 5 has a plurality of micro-entry optics 50 to 58 formed integrally with each other. Each micro-entrance optics 50 to 58 is associated with a first optical axis 50a to 58a, wherein all the first optical axes 50a to 58a in the same direction Z, which direction Z corresponds to the propagation direction of the collimated light beams 7 (see also Figures 5 to 8). The exit optics 6 likewise have a plurality of micro exit optics 60 formed integrally with one another (FIG. 3 shows one of them), each micro exit optics 60 being assigned a second optical axis 60a and all second optic axes 60a being directed in the same direction (direction Z) in Figure 3). With regard to the assembly, it is advantageous if facing light entry surfaces of the entrance optics 5 and the exit optics 6 are formed plan. In addition, each micro-entry optics 50 to 58 one of the collimated light beams 7 facing, preferably curved, for example, convex or free-formed, light entry surface 50b to 58b and a preferably planar, the exit optics 6 facing light exit surface 50c to 58c, all light exit surfaces 50c to 58c a common, preferably planar surface 8 - the light exit surface of the entrance optics - form (see also Figures 2 and 5). According to the invention, each micro exit optics 60 is assigned at least two differently formed micro entrance optics 50 to 58 such that light beams 9 a passing through the at least two differently formed micro entrance optics 50 to 58 and passing through these at least two differently formed micro entrance optics 50 to 58 to 9c (see also Figures 5 to 8) exclusively on the at least two different

trained micro-entry optics 50 to 58 associated and / or corresponding micro-exit optics 60 occur (thereby, for example, aberrations can be reduced) and after passing through the micro-exit optics 60th

different partial areas (e.g., HV area and edges) of the light distribution (see also Figures 5 to 8). In the shown

In the exemplary embodiment, each micro-exit optics is assigned a 3 × 3 micro-entry optical array (see also FIG. 4), wherein a micro-entry optics 54 located in a center of the micro-entry optics array 54 - center optics - differs from the other micro entrance optics 50 to 53 and 55 to 58 of the micro-entrance optical array is formed. However, this should not be understood to mean that the micro-entrance optics 50 to 53 and 55 to 58 of the micro-entry optics array must all be the same. It is quite conceivable that the micro-entry optics 51, 53, 55, 57 a first group of same micro-entry optics of the micro-entry optics array and the micro-entry optics 50, 52, 56, 58 a second group of same micro-entry optics of Form micro-entry optics arrays, wherein the micro-entry optics may be formed differently from the first and from the second group. An embodiment in which the micro-entry optics of the micro-entrance optical array are designed in this way is often referred to as a "symmetrical design." Moreover, it is conceivable that the micro-entry optics belonging to the first and the second group are not all the same . So can

For example, a first part of the first group of micro-entrance optics - the micro-entrance optics 53 and 55 - be formed the same ("horizontal symmetrical design"), the remaining micro-entry optics of the first group - the micro-entry optics 51 and 57 - a can form second part of the first group and equal to each other but different from the micro-entry optics of the first part of the first group can be formed ("vertically symmetrical design"). It is conceivable that all micro-entry optics of the second group are all formed differently and, for example, no single micro-entry optics of the first group same

or are congruent. On top of that, it is also conceivable that all micro-entry optics of the first and the second group are designed individually

(differently formed). This has the advantage that the number of degrees of freedom in adjusting / adjusting a light distribution is increased and allows a better / finer adjustment of the light distribution to be generated. In general, the at least two micro-entrance optics 50-58 may be formed as an NxM micro-entrance optics array, where N> 2, M> 1, or N> 1, M> 2, where all micro-entry optics of the micro- Entry optics array can be formed differently from each other. It may be expedient that the micro entrance optics arrays of the entrance optics 5 are adapted to generate an intermediate image, which preferably lies in front of the exit optics 6.

The individual micro-entry optics 50 to 58 of the micro-entry optics array can be designed, for example, as follows. The center optic 54 may be formed as a plano-convex lens and have a collecting effect by a convex profile of its light entry surface 54b. This is bordered by plano-concave lens or lens pieces 51 to 53 and 55 to 58, which have a scattering effect by a concave profile of their light entry surfaces 51b to 53b and 55b to 58b. The plano-concave lens pieces 51, 53, 55, 57 which adjoin the center optics 54 in the horizontal direction H and in the vertical direction V may be formed, for example, as halves of a plano-concave lens symmetrical with respect to a plane of symmetry-lens halves-the plane of symmetry being the plano-concave lens in two preferably shares equal halves. Conveniently, the lens halves are arranged such that they have towards the center optics 54 an ever-increasing material thickness, whereby

For example, the plano-concave lens or the lens piece (here - lens half) toward the center optics 54 has a stronger refractive power (than at its edge and ergo at one edge of the micro-entrance optics array) and the collimated light beams 7 stronger (than at their Edge) deflects (see also Figures 5 to 6). The remaining four micro-entry optics - corner optics 50, 52, 56 and 58 - of the micro entry optics array shown here, which diagonally adjoin the center optics 54, can also be designed as plano-concave lenses or lens pieces. Preferably, the corner optics 50, 52, 56 and 58 as a lens quarter are rotationally symmetric about their optical axis formed planoconcave lens, each lens quarter of the rotationally symmetric plano-concave lens is the same design the other three lens areas.

Conveniently, the lens areas in the corners of the micro-entrance optics array are arranged such that they diagonally towards the center optics 54 have an ever-increasing material thickness, whereby, for example, the plano-concave lens or the lens piece (here - lens quarter) diagonally toward the Center optics 54 has a stronger refractive power (as at its edge and ergo at one edge of the micro-entrance optics array) and the collimated light beams 7 stronger (as at its edge) deflects (see also Figures 5 to 6).

FIG. 4 shows a schematic front view (front view, ie against the direction Z) of the enlarged section of the entry optics 5 from FIG. 3. FIG. 4 shows, for example, that the central micro entrance optics, gray in FIG colored, and these micro-entry optics adjacent to at least one point may be arranged in a rectangular pattern, wherein all the cells of this rectangular pattern may be the same size, as shown. It is also conceivable that the cells are different in size. Explicitly visible in FIG. 4 are the light exit surfaces 50c to 58c of the micro entrance optics. These have a rectangular, even square shape. The shape of the light exit surfaces 50c to 58c and the cells of the square or

deviate rectangular shape. However, it can be useful if the

Total area of the light exit surfaces 50c to 58c of the micro-entrance optics 50 to 58 of the micro entrance optics array the same size as the light exit surfaces 50c to 58c facing light entrance surface 60b of the micro exit optics 60, which micro exit optics 60, the micro entrance optics 50 to 58 of Micro entrance optics arrays are assigned.

In order to illustrate concrete exemplary shapes of the light entry surfaces of the micro entrance optics and their effect on the beam path of the collimated light beams 7 through the optical imaging system 2, reference is now made to FIGS. 5 to 8. FIG. 6 shows a section AA of FIG. 3. The collimated light beams 7 are incident on the micro-entrance optics 53 to 55. Each micro-entrance optics forms from the collimated light beams 7, which are incident on this micro-entry optics, a light beam 9a to 9c, which form an intermediate image. The intermediate image may, for example, be located in a plane that coincides with the position of the diaphragm device 10. At the shown preferred embodiment, the diaphragm device 10 is arranged in the intermediate image plane. 5 is a section BB of FIG. 3-shown micro-entry optics 51, 53 to 55 and 57 of the micro-entry-optics array, the central lens may be formed as the center lens 54 described above. the lenses 51, 53, 55 and 57 adjacent to this central lens 54 being plano-concave as described above

Lens pieces, such as lens halves, may be formed. As already mentioned, the center lens 54 is preferably formed as a plano-convex lens and collects the light in both the horizontal H and in the vertical direction V. One is

Looking at the combination of Figures 5 and 6 that the refractive power of

Light entrance surface 54b of the center lens 54 in the horizontal direction H need not be the refractive power of the light entrance surface 54b of the center lens 54 in the vertical direction V. In the horizontal direction H, the light entrance surface 54b of the center lens 54 may be less curved and therefore less focused. By a larger focus in the vertical direction V (in general - in the vertical plane), for example, a higher illuminance in a central area - center - one generated

Light distribution can be achieved. This central area corresponds to the so-called "HV point" (a point at which the horizontal HH line or the horizon intersects the vertical VV line) or "HV area" (an area around the HV). Point).

In addition, Figure 5, which is a horizontal section (B-B section) of a

3, it can be seen that the horizontal sections of the light entry surfaces 51b and 57b of the microinjection optics 51 and 57 surrounding the central lens 54 in the horizontal direction H have curvatures which are different from the curvatures of the light entry surfaces 51b and 57b Light entrance surfaces 53b and 55b of the central lens 54 in the vertical direction V adjacent micro-entry optics 53 and 55 differ. Although FIGS. 5 and 6 show different sections (vertically and horizontally) of a micro-entry optics array, this generally applies to the present invention: micro-entry optics comprising a central lens of a micro which is used to form the HV region of a light distribution Adjacent entry optics arrays, all can be designed differently, different curvatures of

For example, have free-form light entry surfaces and are intended to form edges (outer edges) of the light distribution. In addition, the central lens 54 may be formed astigmatic, for example, to allow the shape of a course of light distribution in horizontal H and vertical direction V different, as can be seen in the beam paths of Figures 5 and 6 (see in particular light beam 9b). Conversely, the shape of the central lens 54 may be determined as a result of the requirements of the light distribution pattern. Referring to FIG. 6, the micro-entrance optics 53 and 55 adjacent to the central lens 54 in the vertical direction preferably substantially deflect the collimated rays 7 incident on these micro-entrance optics 53, 55, without forming a converging or divergent light beam. and thus have substantially the effect of a prism. These in the vertical direction

adjacent micro-entrance optics 53 and 55 are responsible, for example, for generating the edges of a light distribution and may be configured to change a vertical extent of the light distribution and / or the HV range of the light distribution.

However, the just described assignment of a region of the light distribution (HV region or edge) to a specific micro-entry optics can not always be realized in practice. Often it is even advantageous, for example, for reasons of homogeneity, when the micro entrance optics 50 to 53 and 55 to 58 of the micro entrance optics array adjacent to the central lens 54 have light entry surfaces 50b to 53b and 55b formed in their region adjacent to the central lens 54 to 58b, that the collimated light beams 7 arriving at these adjacent areas are refracted to light beams 9M, for example, the direction of an area S away from the

Focusing point F of the micro-exit optics 60 propagate, wherein the region S preferably has a smaller distance to the light entry surface 60b of the micro-exit optics 60 than the intercept of the micro-exit optics 60, and later, after exiting the light exit surface 60c of the micro-exit optics 60th propagate due to the defocusing in a direction laterally of the HV area (a partial area of the light distribution).

A light distribution formed by a micro-optics system comprising at least one micro-entry optical array and a micro-exit optical system associated with the micro-entry optical array is called "micro-light distribution" below.

It may also be advantageous to freely form the curvature of the light exit surface 60c in the edge region 60d of the micro exit optics 60 in such a way that the boundary rays 9G of the micro-light distribution, that is, those rays that hit the on

Light exit surface 60c of the micro-exit optics 60 are reflected by total reflection TR so that they no longer contribute to the micro-light distribution, only in those collimated light beams 7, along the optical axes 50a to 53a and 55a to 58a without refraction by the micro- Spreading optics system occurs. This controls the width of the light distribution and increases the luminous flux efficiency.

In a micro-entry optics array of the entrance optics 5, at least one micro entrance optics - central lens 54 - may be formed and associated with the micro exit optics 60 such that the collimated light beams 7 incident on these at least one entrance optics 54 a corresponding light beam 9b are formed, which propagates after emerging from the micro-exit optics 60 in the direction of an HV region of the light distribution.

In addition, at least a second micro-entry optics (in the case of a 3x3 micro-entry optics array, eight micro-entry optics 50 to 53 and 55 to 58) may be formed and associated with the micro-exit optics 60 such that the collimated ones be formed on at least one second micro-entrance optics 50 to 53 and 55 to 58 incident light beams 7 to at least one further, preferably to a plurality of light beams 9a and 9c, which, preferably which, after the

Emerging out of the micro-exit optics 60 in the direction outside an HV range of the light distribution propagated, preferably propagate, and for example determines the width of the light distribution, preferably determine.

FIG. 7 shows a horizontal section of an enlarged detail of a light module with an optional diaphragm device 10, which light module is essentially the same as the light module 1 described in FIGS. 1 to 6. Different in the section of the light module shown in FIG. 7, the shape of the light entry surfaces 51b ', 54b', 57b 'of the micro entrance optics 5V, 54', 57 'of the entrance optics. Both the center optic 54 'shown here and the micro entrance optics 51' and 57 'adjoining this center optic have free-form light entry surfaces 51b', 54b ', 57b' (free-form light entry surfaces). Functionally, furthermore, the center optics 54 'substantially form the HV region and the center optics 54' adjacent free-form micro entrance optics 51 'and 57' form edges of a light distribution. The curvature of a light entry surface of a single free-form micro-entry optics, such as the central center optics 54 ', at various points of

Light entrance surface, for example, the light entry surface 54b 'of the center optics 54', different values. Different free-form micro-entry optics can have different light entry surface curvature profiles.

In general, for example, one half of the light entry surface of a free-form micro-entry optics, which in inserting the free-form micro-entry optics in the

Upper half of the vehicle lighting device corresponds to be curved differently with respect to the other half, for example, to achieve different course of the generated light distribution above and below the horizontally passing through the HV point HH line.

The light exit surfaces 51c ', 54c', and 57c 'are part of the common, preferably plane surface 8, which not only in the illustrated Figure 7 but also in the general case forms an exit optics light exit surface. Use of the freeform lenses is advantageous from the point of view of accurate formation / shaping of the light distribution. In this case, the light entry surfaces 51b ', 54b', and 57b 'can be adapted / calculated to the specifications for light distributions to be generated.

Figure 8 shows a vertical section of an enlarged section of another

Embodiment of the light module according to the invention with an optional

Lighting device 10. The light module is essentially the same as the light module 1 described in FIGS. 1 to 6. Different in the section of the light module shown in FIG. 8, for example, the shape of the light entry surfaces 53b ", 55b" is the entrance optics of the entrance optics adjacent to the center optics 54. The center optic 54 shown in FIG. 8 is plano-convex. The center optics 54 adjacent micro-entry optics 53 "and 55" are also plano-convex. In this case, the micro-entrance optics 53 ", 55" surrounding the middle optics 54 can be designed such that their light entry surfaces 53b ", 55b" lie in a common area 500. This may apply to all micro-entry optics adjacent to the center optics as well as to individual pairs of the micro-entry optics adjacent to the center optics, although different pairs may have differently shaped common areas. The light entry surfaces 53b ", 55b" of the center optics 54 adjoining Entry optics 53 ", 55" are preferably designed to break the collimated light beams 7 incident on them in such a way that, after emerging from the micro exit optics 60 of the light module, they enter a region 501, but nevertheless in edges or edge regions of one, preferably lawful light distribution, for example, at a distance of about 25 meters in front of the light module form. The center optics 54 adjacent micro-entry optics 53 ", 55" can further than

plano-convex lens pieces be formed. FIG. 8 shows such an embodiment, wherein the plano-convex lens pieces additionally comprise coincident optical axes, in addition to the optical axis 54a of the center optics

coincide. It is conceivable that the center optics 54 shown in FIG. 8 and the micro entrance optics array comprising the center optics 54, 53 "and 55", are of rotational symmetry with respect to the optical axis 54a and thus of the example deviates in Figure 4 square of the micro-entrance optics array.

As already mentioned, all figures show micro-entry optics whose light exit surfaces preferably form a common, preferably plane surface 8. It should be noted that from a visual optical point of view also biconvex convex-concave or other combinations with, for example, concavely curved light entry surfaces to account for a highly dispersive entrance optics, can be used.

By using flat light exit surfaces, the manufacturing process can be simplified. Furthermore, it is conceivable for the micro-exit optics and the at least two micro-entry optics associated therewith to form a common stack

assembled and connected by means of a transparent adhesive and form in this way a common component, wherein between the micro-exit lens and the at least two micro-entry optics associated therewith at least one aperture (a part of the at least one lighting device 10 mentioned above) can be provided.

Moreover, in planar-shaped areas, for example, tilts of the micro-entrance optics with respect to each other can be reduced, thus achieving, for example, rectification of the optical axes when the micro-entry optics are connected to the micro-exit optics as described above, for example glued. Unless it necessarily results from the description of one of the above embodiments, it is assumed that the described embodiments can be combined with each other as desired. Among other things, this means that the technical features of one embodiment can be combined with the technical features of another embodiment individually and independently of one another at will, in order to arrive in this way to a further embodiment of the same invention.

Claims

A motor vehicle lighting device (1) for generating a light distribution comprising an optical imaging system (2) and at least one of the optical

Imaging system associated light source (3),

wherein the optical imaging system (2) comprises a collimator (4), an entrance optic (5) and an exit optic (6), wherein the collimator (4) is arranged between the at least one light source (3) and the entrance optic (5) is to collimate light beams generated by the at least one light source (3) and to direct the collimated light beams (7) onto the entrance optics (5) of the optical imaging system (2), the entrance optics (5) comprising a plurality of integrally formed microphones. Having entry optics (50 to 58), wherein each micro-entry optics (50 to 58) is associated with a first optical axis (50a to 58a), wherein all first optical axes (50a to 58a) in the same direction, which direction of the propagation direction of corresponding to collimated light beams (7), wherein the exit optics (6) comprises a plurality of integrally formed with each other micro-exit optics (60), each micro-exit soptik (60) is associated with a second optical axis (60a), wherein all the second optical axes (60a) extend in the same direction, each micro-entry optics (50 to 58) one of the collimated light beams facing light entry surface (50b to 58b) and one of the exit optics (6) facing the light exit surface (50c to 58c), wherein all light exit surfaces (50c to 58c) form a common surface (8), characterized in that each micro exit optics (60) at least two differently formed micro entrance optics ( 50 to 58) are assigned such that the at least two

differently formed micro-entrance optics (50 to 58) incident and formed by these at least two differently formed micro-entry optics (50 to 58)

passing light beams (9a to 9c) incident solely on the at least two differently formed micro-entry optics (50 to 58) associated micro exit optics (60) and form after passing through the micro exit optics (60) different partial areas of the light distribution ,

2. Motor vehicle lighting device according to claim 1, characterized in that the at least two micro-entry optics (50 to 58) in a NxM micro- Entry optics array, where N> 2 or M> 2, preferably in a 3x3 micro entrance optics array are arranged.

3. Motor vehicle lighting device according to claim 1 or 2, characterized

characterized in that the entrance optics (5) is adapted to generate an intermediate image, which intermediate image through the exit optics (6) in front of the

Motor vehicle lighting device (1) is shown, wherein the intermediate image is preferably in front of the exit optics (6).

4. Motor vehicle lighting device according to one of claims 1 to 3, characterized in that at least one first micro-entry optics (54) of the at least two differently formed, the micro-exit optics (60) associated and / or corresponding micro-entry optics (50 to 58) is formed and the micro-exit optics (60) corresponds and / or assigned such that koUimierte on this at least one first micro-entrance optics (54) incident light beams (7) after the

Emerging from the micro-exit optics (60) toward a HV region of the

Propagate light distribution.

5. Kr aftfahrzeugbeleuchtungs device according to one of claims 1 to 3, characterized in that at least one first micro-entry optics (54) is formed as a plano-convex lens.

6. Motor vehicle lighting device according to claim 4 or 5, characterized

in that at least one second micro-entry optics (50 to 53, 55 to 58) of the at least two differently formed micro-entry optics assigned to and / or corresponding to the micro-exit optics (60) are designed in such a way and the micro exit optics (60) is corresponding and / or associated in such a way that co-optimized light beams (7) incident on these at least one second micro-entry optics (50 to 53, 55 to 58) exit the micro-exit optics (60) in the direction outside an HV range propagate the light distribution.

7. Motor vehicle lighting device according to claim 6, characterized in that the at least one second micro-entry optics (50 to 53, 55 to 58) as a

plano-concave lens or as a plano-concave lens piece or as a plano-convex lens piece is formed.

8. Kr aftfahrzeugbeleuchtungs device according to one of claims 1 to 7, characterized in that the light entry surfaces (50b to 58b) are formed as free-form surfaces.

9. motor vehicle headlight with at least one

Motor vehicle lighting device according to one of claims 1 to 8.

10. A motor vehicle headlamp, which is designed as a motor vehicle lighting device according to one of claims 1 to 8.

11. Motor vehicle with at least one motor vehicle headlight according to claim 9 or 10.